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C1127 (bizhub 950i/850i)

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Trouble typeC1127: Punch oscillating motor malfunction (When FS-540+PK-526 or FS-540SD+PK-526 is installed)
RankB
Trouble detection conditionThe punch oscillating home sensor (PS303) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed while the punch oscillating motor (M302) is energized.
Trouble isolationPunch
Relevant electrical parts– Punch oscillating motor (M302)
– Punch oscillating home sensor (PS303)
– Punch control board (PKCB)
– FS control board (FSCB)

Procedure

  1. Check the connector between M302-PKCB CN34 for proper connection and correct as necessary.
  2. Check the connector of M302 for proper drive coupling and correct as necessary.
  3. Check the connector between PS303-relay CN342-PKCB CN37 for proper connection and correct as necessary.
  4. PS303 I/O check, sensor check
    • Control signal: PKCB CN37-2 (ON)
    • Location of electrical component: PK-526 5-C
  5. M302 operation check
    • Control signal: PKCB CN34-1 to 6
    • Location of electrical component: PK-526 5-C
  6. Replace M302.
  7. PKCB ICP2 conduction check
  8. Replace PKCB.
  9. Replace FSCB.

(Link to the Field Service Manual)

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